Installation and Service Manual
Figure 20 – Vertical DirectAire Installation with Rooftop
Combustion Air Inlet
Vent Kits
ƽ WARNING: Only use a sidewall air inlet cap
supplied by the appliance manufacturer or a rooftop
air inlet cap supplied by the vent manufacturer.
Using any other air inlet cap for single-unit
installations or using a common air inlet cap for
multiple units with insufficient free area and/or
protections from wind and weather may result in
operational problems and the spillage of flue
products. Spillage of flue products can cause
personal injury or death due to carbon monoxide
poisoning.
For single pool heater installations with sidewall air inlet, (see
Figure 18) you must order the sidewall air inlet kit. The part number
for each SVK kit is listed by input size in TABLE–D.
For single pool heater installations with rooftop air inlet (see
Figure 20), you must order the rooftop air inlet kit The part number
for each VDK kit is listed by input size in TABLE-D. Purchase the
flue pipe, rooftop flue termination, and air inlet pipe locally.
There is no vent kit for combined air supply systems for multiple pool
heaters. Make sure the air inlet cap is properly sized. You must purchase
this cap locally.
Venting of Flue Products
For venting flue products vertically to the outdoors, follow all
requirements in the installation instructions for conventional
venting in this manual. Follow all clearance requirements in Vertical
Vent Termination Clearances and Location, page 10.
A barometric damper is not required in the flue on Vertical
DirectAire™ installations if the draft is within the negative 0.04 to
0.08 inches w.c. required for proper operation. If the draft exceeds
this range, install a barometric damper.
TABLE-D
DirectAire™ Kits
Input
Btu/hr
Horizontal
Kit*
Vertical
Kit*
500,000 SVK3047 VDK3026
650,000 SVK3048 VDK3027
750,000 SVK3048 VDK3027
990,000 SVK3040 VDK3023
1,260,000 SVK3041 VDK3024
1,440,000 SVK3041 VDK3024
1,800,000 SVK3041 VDK3024
2,070,000 SVK3041 VDK3024
* The SVK kits include a DV box adapter and sidewall air inlet cap. The
VDK kits include a DV box adapter and a rooftop air inlet cap. See note
on page 12 concerning DV box adapter.
3. Sidewall Venting
IMPORTANT: Before installing a venting system,
follow all venting clearances and requirements
found in the Venting, General Information section,
page 10.
This option uses a powered vent assembly which pulls the flue
products out of the stack. This fan generates a negative draft at the
pool heater. Combustion air is drawn from the equipment room
(see Combustion and Ventilation Air, page 7).
Figure 21 – Sidewall Venting Installation with an Induced
Draft Fan and Sidewall Vent Cap
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